 /*
 * TipTip
 * Copyright 2010 Drew Wilson
 * www.drewwilson.com
 * code.drewwilson.com/entry/tiptip-jquery-plugin
 *
 * Version 1.3   -   Updated: Mar. 23, 2010
 *
 * This Plug-In will create a custom tooltip to replace the default
 * browser tooltip. It is extremely lightweight and very smart in
 * that it detects the edges of the browser window and will make sure
 * the tooltip stays within the current window size. As a result the
 * tooltip will adjust itself to be displayed above, below, to the left 
 * or to the right depending on what is necessary to stay within the
 * browser window. It is completely customizable as well via CSS.
 *
 * This TipTip jQuery plug-in is dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 */

(function($){
  $.fn.tipTip = function(options) {
    var defaults = { 
      activation: "hover",
      keepAlive: false,
      maxWidth: "200px",
      edgeOffset: 3,
      defaultPosition: "bottom",
      delay: 400,
      fadeIn: 200,
      fadeOut: 200,
      attribute: "title",
      content: false, // HTML or String to fill TipTIp with
        enter: function(){},
        exit: function(){}
      };
     var opts = $.extend(defaults, options);
     
     // Setup tip tip elements and render them to the DOM
     if($("#tiptip_holder").length <= 0){
       var tiptip_holder = $('<div id="tiptip_holder" style="max-width:'+ opts.maxWidth +';"></div>');
      var tiptip_content = $('<div id="tiptip_content"></div>');
      var tiptip_arrow = $('<div id="tiptip_arrow"></div>');
      $("body").append(tiptip_holder.html(tiptip_content).prepend(tiptip_arrow.html('<div id="tiptip_arrow_inner"></div>')));
    } else {
      var tiptip_holder = $("#tiptip_holder");
      var tiptip_content = $("#tiptip_content");
      var tiptip_arrow = $("#tiptip_arrow");
    }
    
    return this.each(function(){
      var org_elem = $(this);
      if(opts.content){
        var org_title = opts.content;
      } else {
        var org_title = org_elem.attr(opts.attribute);
      }
      if(org_title != ""){
        if(!opts.content){
          org_elem.removeAttr(opts.attribute); //remove original Attribute
        }
        var timeout = false;
        
        if(opts.activation == "hover"){
          org_elem.hover(function(){
            active_tiptip();
          }, function(){
            if(!opts.keepAlive){
              deactive_tiptip();
            }
          });
          if(opts.keepAlive){
            tiptip_holder.hover(function(){}, function(){
              deactive_tiptip();
            });
          }
        } else if(opts.activation == "focus"){
          org_elem.focus(function(){
            active_tiptip();
          }).blur(function(){
            deactive_tiptip();
          });
        } else if(opts.activation == "click"){
          org_elem.click(function(){
            active_tiptip();
            return false;
          }).hover(function(){},function(){
            if(!opts.keepAlive){
              deactive_tiptip();
            }
          });
          if(opts.keepAlive){
            tiptip_holder.hover(function(){}, function(){
              deactive_tiptip();
            });
          }
        }
      
        function active_tiptip(){
          opts.enter.call(this);
          tiptip_content.html(org_title);
          tiptip_holder.hide().removeAttr("class").css("margin","0");
          tiptip_arrow.removeAttr("style");
          
          var top = parseInt(org_elem.offset()['top']);
          var left = parseInt(org_elem.offset()['left']);
          var org_width = parseInt(org_elem.outerWidth());
          var org_height = parseInt(org_elem.outerHeight());
          var tip_w = tiptip_holder.outerWidth();
          var tip_h = tiptip_holder.outerHeight();
          var w_compare = Math.round((org_width - tip_w) / 2);
          var h_compare = Math.round((org_height - tip_h) / 2);
          var marg_left = Math.round(left + w_compare);
          var marg_top = Math.round(top + org_height + opts.edgeOffset);
          var t_class = "";
          var arrow_top = "";
          var arrow_left = Math.round(tip_w - 12) / 2;

                    if(opts.defaultPosition == "bottom"){
                      t_class = "_bottom";
                     } else if(opts.defaultPosition == "top"){ 
                       t_class = "_top";
                     } else if(opts.defaultPosition == "left"){
                       t_class = "_left";
                     } else if(opts.defaultPosition == "right"){
                       t_class = "_right";
                     }
          
          var right_compare = (w_compare + left) < parseInt($(window).scrollLeft());
          var left_compare = (tip_w + left) > parseInt($(window).width());
          
          if((right_compare && w_compare < 0) || (t_class == "_right" && !left_compare) || (t_class == "_left" && left < (tip_w + opts.edgeOffset + 5))){
            t_class = "_right";
            arrow_top = Math.round(tip_h - 13) / 2;
            arrow_left = -12;
            marg_left = Math.round(left + org_width + opts.edgeOffset);
            marg_top = Math.round(top + h_compare);
          } else if((left_compare && w_compare < 0) || (t_class == "_left" && !right_compare)){
            t_class = "_left";
            arrow_top = Math.round(tip_h - 13) / 2;
            arrow_left =  Math.round(tip_w);
            marg_left = Math.round(left - (tip_w + opts.edgeOffset + 5));
            marg_top = Math.round(top + h_compare);
          }

          var top_compare = (top + org_height + opts.edgeOffset + tip_h + 8) > parseInt($(window).height() + $(window).scrollTop());
          var bottom_compare = ((top + org_height) - (opts.edgeOffset + tip_h + 8)) < 0;
          
          if(top_compare || (t_class == "_bottom" && top_compare) || (t_class == "_top" && !bottom_compare)){
            if(t_class == "_top" || t_class == "_bottom"){
              t_class = "_top";
            } else {
              t_class = t_class+"_top";
            }
            arrow_top = tip_h;
            marg_top = Math.round(top - (tip_h + 5 + opts.edgeOffset));
          } else if(bottom_compare | (t_class == "_top" && bottom_compare) || (t_class == "_bottom" && !top_compare)){
            if(t_class == "_top" || t_class == "_bottom"){
              t_class = "_bottom";
            } else {
              t_class = t_class+"_bottom";
            }
            arrow_top = -12;            
            marg_top = Math.round(top + org_height + opts.edgeOffset);
          }
        
          if(t_class == "_right_top" || t_class == "_left_top"){
            marg_top = marg_top + 5;
          } else if(t_class == "_right_bottom" || t_class == "_left_bottom"){    
            marg_top = marg_top - 5;
          }
          if(t_class == "_left_top" || t_class == "_left_bottom"){  
            marg_left = marg_left + 5;
          }
          tiptip_arrow.css({"margin-left": arrow_left+"px", "margin-top": arrow_top+"px"});
          tiptip_holder.css({"margin-left": marg_left+"px", "margin-top": marg_top+"px"}).attr("class","tip"+t_class);
          
          if (timeout){ clearTimeout(timeout); }
          timeout = setTimeout(function(){ tiptip_holder.stop(true,true).fadeIn(opts.fadeIn); }, opts.delay);  
        }
        
        function deactive_tiptip(){
          opts.exit.call(this);
          if (timeout){ clearTimeout(timeout); }
          tiptip_holder.fadeOut(opts.fadeOut);
        }
      }        
    });
  }
})(jQuery);    